// Copyright 2020 the go-etl Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package transform

import "github.com/Breeze0806/go-etl/element"

//Transformer 转化器
type Transformer interface {
	DoTransform(element.Record) (element.Record, error)
}

//NilTransformer 空转化器
type NilTransformer struct{}

//DoTransform 转化
func (n *NilTransformer) DoTransform(record element.Record) (element.Record, error) {
	return record, nil
}
